Well, if anyone in the military received such an order, the correct thing to do is to refuse to follow it, as it is an unlawful order. And why is it unlawful? Because it exceeds the bounds of what the president can legitimately order the military to do. Any service member who carried out such an order could be prosecuted for doing so.

So, if the president doesn't have the legitimate authority to order the military to do such a thing, could the president be prosecuted for giving such an order? As I read the decision, yes, he could.